Abstract
This work demonstrates the potential of laser engineered net shaping (LENS) to fabricate near-eutectic AlxCoCrFeNi2.1 high-entropy alloys from elemental powders. The as-deposited alloys consisted of FCC and B2 phases and revealed a change in microstructure from dendritic to lamellar with an increase in Al-concentration. The strength of the AlxCoCrFeNi2.1 alloys can be expressed as a function of the volume fraction of the constituent phases. Our results suggest that LENS can be readily adapted to large-scale production of these alloys from elemental powders with excellent microstructural homogeneity, printability and mechanical properties, and avoids the use of expensive pre-alloyed powders.
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